Seaming tool for pipe joints



Jan. 5, 1932. A. G.-PERKINS- SEAMING TOOL FOR PIPE JOINTS Filed March 15, 193 0 2 Sheets-Sheet l Jim/672707;

Jan. 5, 1932. A. e. PERKINS 1,839,255

SEAMING TOOL FOR PIPE JOINTS Filed March 15, 1930 2 Sheets-Sheet 2 w zz tg z// 1/ f I i J 5 15 x4 L -L 4g m Z 1 v u %7 vi 22':

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Patented Jan. 5, 1932 i :Iv q

I umrEos ATEs PATENT", OFFICE f r ALBERT e. PERKINS, or BUFFALO, NEW Yonx SEAMING TOO FOR PIPE JOINT$ 2 Application filed March 13, 1930. Serial No. 435,429.

This invention "relates to new and useful fEncircling the coupling ring 12 and einimprovements in a' seaming tool designed bracing the top and-adjoining sides thereof is particularly for sealing the flanged joints of a track 13 which may be secured at its ends waterpipe lines, concrete pipes and the like. by a clamping bolt 14 and in addition to firmf One of its objects is to improve the drive; 1y securing the clamping ring inplace while '55 mechanism of the joint-sealing elements with being sealed, also serves to guide-the tool a view of effecting a positive and balanced around the joint during the sealing thereof. drive to such elements." The seaming tool consists of a suitable cas- Another obj ect of the invention is the proing in which its parts aremounted, the prevision of a tool ofthis character which is ferred casing shown in the drawings, consist 60' reliable and efiicient in operation, which is I ing of a base-section and a top section16, simple, and compact in' construction, and these. sections being bolted or-otherwise 'fas which can be readilyapplied to and removed tened together. J ournaled in appropriate from the joint. y bearings in the casing-section 15are parallel,

15 In the accompanying drawings upright shafts 17, 18 which are provided at 65 Figure 1 is a cross section of a concrete their lower ends with forming orpressure pipe showing my improved tool thereon. rollers 19 arranged to engage opposite sides of. Figure 2.is a fragmentary longitudinal secthecoupling ring 12 for propelling the tool in tion of two pipes showing a front view of a circular path about the joint and also for Q 0 in P 0 he joint-V ig re 8 n compressing the sides of said ringfinto sealing enlarged transverse section 'ofthetoo1 taken engagement with the jointflanges 11. The on line 33, Figure .1. Figure 4:;is 311.6111 rollereshafts are disposed] substantially in g longitudinal Section of thetool taken the transverse center line of the casing and on line 44:, Figure 2. Figure 5 isa hOIlZO-II- at opposite sides of its longitudinal center tal section thereof tak n on l gline, and motion is transmitted theretoby a' ure 3. Figure 6 is a horizontal section of the drive mechanism preferably constructed as tool taken on line 6 6,'F igure 3. follows v I V Sim characters reference indicate Applied to the upper ends of the shafts "17 correspon ng Parts throughout the sfi l 18land contained within the casing-section 16 views. I are worm gears 20, 21, respectively, and inter- 30 By way of example, my improved tool has posed between these gears and the top side of been shown in connection With a flanged the casingesection 15 are thrust bearings 22. j oint connecting a pair of concrete plpe-sec- Eaeh of these Worm gears is geared at its options 10, 10 h PPQ g ends the sectlfms posite sides to companion sets of worms 23 w terminatmg 111 t a 1l p g and 24l secured to transverse, horizontal shafts fl t 11 P 111 t Plane of T 25 and'26, respectively, journaled in the side lomtfidges Q fi PlP Q and havlng walls of the casing, as seen in Figure 5. Said atspht coltphng rmg 12 apphed h shafts 25, 26 are driven from anupright drive gmal: of h s i fl d' atin the shaft 27 journaled in the upper casing-section m to f -J i t 3 8' substantially centrally between such shafts,

phng flanges and then Sealmg rmg the latter havin worm gears 28 thereon meshmade of steel or other malleable mater1al,so th D f 29 fi a that whenthe ring is pinched by external m d .e g i 3 WP? X pressure applied to opposite sides thereof, a Q t S a b a 1n f i practically integrally united structure and 3 t 2 w Y e'top 0 99351-9 fiuid tight joint is produced. This improved mg and may have/-34 W gear 30 nv machine isdesigned to travel about the joint and furni h th d ir d e ur -t so l suitable source of power, including a flexible the coupling ring to the coupling flanges of connection to the caslng. The gear 30 and I the pipes. worm 31 may be contained with n a housing which meshes with a worm 31 driven by any; I

b rious elements ofthe drive mechanism.

Contained within the upright portion of T-slot or opening 33 formed in the casingsection between the roller-shafts 17, 1 8 is a guiding or sustaining roller 34 for the tool, the same being adapted to travel on the peripheral surface of the track 13. Thrust rollers 35 are preferably adjustable toward and from the center of the upper peripheral side of "the track-roller, and for this purpose each is-niounte'd in a forked bearing 36 guided grooves 37 formed in the side walls of the up peror transverse portion of the T-shaped i' opening 33, these rollers being urged toward the track-roller by adjusting screws 38 mounted in corresponding yoke-plates 39 detachably applied to extensions 40 formed at the frontand rear sides of the casing-section -"15', -'as s'een'in Figures 4 and 6. Engaging 'vid'ed to offer the required resistance to tn bl the roller-shaft thelowerportionof the roller 34 at opposite sides'of its center are follower-blocks 41 which act to prevent the roller shifting downwardly outof the casing, coil springs 42 being proprevent'such displacement of the roller.

"In' order to permit the ready application and removal 'of the tool to and from the joint being operated upon, one of the forming roll- "fer-shafts is shiftable toward and from the other transversely of the casing. To this end, theroller-shaft 18 is journaled in a bearing block43 adjustably guided formovement in an'op'enin'g 44 formed in the base-section 15 6f the casing, such block being normally held in its-operative position by clamping bolts 45. Upon loosening these bolts, the shaft 18 together "with its roller 19 may be shifted out-wardlyit'o'bring the latter clear of the couplin'g ring'12 of the joint, and thereby enable the machine to be applied to or removedfrom the joi'n't inan obvious manner. Applied to the'upper portion of the shaft18' and shiftabletherewith is a cover plate 46 which is guided in a groove 47 formed in the top side of the casing-section 15 and which constitutes a closurefor the opening 44 to prevent loss of lubricant contained in the upper gear casing 16..

I 18 with its gear 21ftobe shifted toward and from the companion shaft 17 relative to the worms 23, 24, one of' th'e'ivorms, say the worm -23, is so mounted as to be shiftable lengthwise on its shaft 25' asa unit with saidshaft 17 This action isi'preferably attained by splining the worm"23'on its shaft, as seen in Figure 5, so

, rollers 1 for engagement, (with ,oppo

allowing'the worm to slide on its shaft as the roller-shaft 18 is shifted to spread the rollers and permit the application and removal of the tooltoandfron the joint. As the worm 23 is slid lengthwise on its shaft in response .thQlHOYBHlQDtDTE the roller-shaft 18, the gear 21 thereof rolls over the companion worm 24.

As clearly sh ownin Figure 3-, the forming or s eaming rollers 19 are substantially frustoconical in' shape, their corrugated bearing faces converging upwardlyfto grip the inner,

portion of the coupling ring 12 0f the oint and thus preventoutward displacement of the toolwhen revolving; about thejoint toseal it.

"Intermediate its ends and on' opp ositesides of the respective worm jgears 28,, each shaft 6 is Pr fe a ly..j'our le i ngs 1.:

and interposed between these bearings and theworms 23 24 are thrustbearings 52.

Lubrication of theroller' s hafts. 1? Mali may be effected by providing each of them with a lubricant chamber 53 having one .or more ports 54 thereinfol delivering the'lubricant to the bearings, j v

I 'claim as my invention 1. tool fon sealing pipe joints, I

ing'a 'oa sing' movab-lealongand in the plane of the joint, upright shafts ,jo urnaled in said.

casing and provided at thei flowerends with seaming rollers adaptedjfor engagement with; 1

opposite'sides of thjeljoint to seal-it, a drive aft shed pa a iwi hanabewe i e. upperiend's'of said roller-shafts, and 'adriven shaft disposed at right an lesfi-to the latter,,

d. e re tQfhQ Q Q Q a. a id sa r l e shaft si 2; A tool for 7 ing a casing movable along and in the plane of thejoint, upright shafts j ournaled in said casing and pr oyided at t'heg lower jends v with "seaming" rollers ad z tpted for engage mentwith oppositesides of tlie'jointto seal it v I and at'their upper-ends with driving ments, an uprightdriveshaft disposed sub}; stantially centrally between said roller-l", j shafts, and horizontallygdisposed driven,

shafts arranged on oppositesides ofthe drive.

shaft and rollerhshafts jand'in]driving'en- V,

gagement therewith,

3. A ea-ferann ip af oint;esprit;

ing a casing movable-along and in the plane of the joint, upright shafts journaledinsaid i casing in ,tran'sverselyrspaced relation and; I I

provided at their lower ,endswith'seamingsite sides of the oint to seal it and at their upper ends with worm gears, an upright drive shaft disposed substantially centrally between said roller-shafts and having a worm thereon, and horizontal driven shafts arranged transversely of the casingat opposite sides of the drive shaft and roller-shafts, each of said driven shafts having a worm gear thereon meshing with the worm on the drive shaft and worms meshing with the Worm gears on the roller-shafts.

4. A tool for sealing pipe joints, comprising a casing movable along and in the plane of the oint, uprightshafts journaled side by side in said casing and provided at their lower ends with seaming rollers adapted .for engagement with opposite sides of the joint to seal it and at their upper ends with drive gears, one of said shafts being shiftable transversely of the casing toward and from the other, means for controlling the relative movements of said shiftable shaft for efii'ecting the application and removal of the tool to and from the joint, and a horizontal driven shaft journaled transversely of the casing and having gears thereon meshing with the companion roller-shaft gears, one of the driven shaft gears being slidably mounted on its shaft for movement with the transversely-shiftable roller-shaft.

5. A tool for sealing pipe joints, comprising a casing movable along and in the plane of the joint, upright shafts journaled side by side in said casing and provided at their lower ends with seaming rollers adapted for engagement with opposite sides of. the joint to seal it and at their upper ends with drive gears, one of said shafts being shiftable transversely of the casing toward and from the other, means for controlling the relative movements of said shiftable shaft for effecting the application and removal of the tool to and from the joint, a horizontal driven shaft journaled transversely of the casing and having gears thereon meshing with the companion roller-shaft gears, one of the driven shaft gears being slidably mounted on its shaft for movement with the transversely-shiftable roller-shaft, and means for normally maintaining said slidable gear in operative engagement with the corresponding roller-shaft gear.

6. A tool for sealing pipe joints, comprising a casing movable along and in the plane of the joint, upright shafts journaled side by side in said casing and provided at their lower ends with seaming rollers adapted for engagement with opposite sides of the joint to seal it and at their upper ends with drive gears, one of said shafts being shiftable transversely of the casing toward and from the other, means for controlling the relative movements of said shiftable shaft for effecting the application and removal of the tool to and from the joint, a horizontal driven shaft journaled transversely of the casing and having gears thereon meshing with the companion roller-shaft gears, one of the driven shaft gears being slidably mounted V on its shaft for movement with the transversely-shiftable roller-shaft, means for nor-' roller-shaft gear, including a sleeve applied to the driven shaft and bearing atone end against the slidable gear, and a threaded element secured to end of said driven shaft and mally maintaining said slidable gear in operative engagement with the corresponding having an adjusting nut thereon engageable with the oppositeend of said sleeve.

7. A tool for sealing pipe joints, compris- I ing a casing movable along and in the plane j shafts being shiftable toward and from the other transversely of the casing, means for controlling the relative movement of said shiftableshaft for effecting the application and removal of the tool to and from the oint, horizontal driven shafts arranged transversely of the casing on opposite sides of said roller-shafts, and gears mounted on said driven shafts and meshing with the opposite sides of the corresponding gears on the roller shafts, one of the driven shaft gears meshing with the shift-able roller-shaft gear being slidably mounted on its shaft for movement with such roller-shaft and the other of said driven shaft gears being immovable on its shaft and over which the companion roller shaft gear is free to roll during the 

